/Engine/Plugins/Runtime/Metasound/Source/MetasoundFrontend/Public/MetasoundFrontendDocumentBuilder.h
const [FMetasoundFrontendNode](API\Plugins\MetasoundFrontend\FMetasoundFrontendNode) * AddGraphInput ( const [FMetasoundFrontendClassInput](API\Plugins\MetasoundFrontend\FMetasoundFrontendClassInput) & InClassInput )